Abstract |
The complex pathogenesis of Alzheimer's disease (AD) has become a major obstacle in its treatment. An effective approach is to develop multifunctional agents that simultaneously target multiple pathological processes. Here, a series of diosgenin- indole compounds were designed, synthesized and evaluated for their neuroprotective effects against H2O2 ( hydrogen peroxide), 6-OHDA (6-hydroxydopamine) and Aβ ( beta amyloid) damages. Preliminary structure-activities relationship revealed that the introduction of indole fragment and electron-donating group at C-5 on ring indole could be beneficial for neuroprotective activities. Results indicated that compound 5b was the most promising candidate against cellular damage induced by H2O2 (52.9 ± 1.9%), 6-OHDA (38.4 ± 2.4%) and Aβ1-42 (54.4 ± 2.7%). Molecular docking study suggested the affinity for 5b bound to Aβ1-42 was -40.59 kcal/mol, which revealed the strong binding affinity of 5b to Aβ1-42. The predicted values of brain/blood partition coefficient (-0.733) and polar surface area (85.118 Å2) indicated the favorable abilities of BBB permeation and absorption of 5b. In addition, 5b significantly decreased ROS ( reactive oxygen species) production induced by H2O2. In the following in vivo experiment, 5b obviously attenuated memory and learning impairments of Aβ-injected mice. In summary, compound 5b could be considered as a promising dual-functional neuroprotective agent against AD.
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Authors | Li-Cheng Zhou, Ying-Fan Liang, Yi Huang, Gui-Xiang Yang, Lu-Lu Zheng, Jia-Min Sun, Yang Li, Fu-Li Zhu, He-Wen Qian, Rui Wang, Lei Ma |
Journal | European journal of medicinal chemistry
(Eur J Med Chem)
Vol. 219
Pg. 113426
(Jul 05 2021)
ISSN: 1768-3254 [Electronic] France |
PMID | 33848787
(Publication Type: Journal Article)
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Copyright | Copyright © 2021 Elsevier Masson SAS. All rights reserved. |
Chemical References |
- Amyloid beta-Peptides
- Indoles
- Neuroprotective Agents
- Peptide Fragments
- Reactive Oxygen Species
- amyloid beta-protein (1-42)
- Hydrogen Peroxide
- Diosgenin
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Topics |
- Alzheimer Disease
(drug therapy)
- Amyloid beta-Peptides
(chemistry, metabolism, pharmacology)
- Animals
- Binding Sites
- Blood-Brain Barrier
(drug effects, metabolism)
- Cell Survival
(drug effects)
- Diosgenin
(chemistry)
- Disease Models, Animal
- Drug Design
- Humans
- Hydrogen Peroxide
(pharmacology)
- Indoles
(chemistry)
- Male
- Maze Learning
(drug effects)
- Mice
- Mice, Inbred ICR
- Molecular Docking Simulation
- Neuroprotective Agents
(chemical synthesis, therapeutic use)
- Peptide Fragments
(chemistry, metabolism, pharmacology)
- Reactive Oxygen Species
(metabolism)
- Structure-Activity Relationship
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